We are pleased to announce that as of August 13, 2015, Qualcomm Global Trading Pte. Ltd., a subsidiary of Qualcomm Incorporated, has completed its acquisition of CSR plc. For more information, please see the press release .

CSRA65700™ QFN

CSR's CSRA65700™ QFN is a system optimized single chip audio sink device for wireless subwoofer speakers based on CSR’s Subwoofer Audio Transfer (SWAT) transport mechanism, integrating an Application processor, Audio DSP, multiple IOs, power management and LED drivers. CSRA65700 QFN combines with any CSR SWAT capable source, in the soundbar or AVR, to form a robust wireless subwoofer link in a high fidelity multi-channel audio system.

CSR's configuration tools and Persistent Store Keys (external EEPROM or SPI flash) provide a flexible means of customizing CSRA65700 QFN to drive the subwoofer power amplifiers I²C interface, associate device control with different button presses, configure user and speaker EQ settings, configure volume control and define unique LED patterns with user actions, and assign PIO, analog line out or digital I²S output functionality.

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  • Bluetooth® v4.0 specification
  • RF performance of 8dBm transmit power and -89dBm receiver sensitivity
  • CSR's Subwoofer Audio Transfer (SWAT) transport mechanism
  • Secure simple pairing with CSR's proximity pairing
  • Low latency audio transfer across SWAT link
  • Configurable speaker cut-off frequency
  • DSP music enhancements including Multi-Band EQ functionality
  • Integrated high quality CODECs
  • 3 hardware LED controllers
  • 68-lead QFN 8 x 8 x 0.9mm 0.4mm pitch

Physical Interfaces

  • SPI interface for debug and programming
  • I²C EEPROM interface for external power amplifier
  • UART (for Production Test environment only)
  • Up to 20 general purpose PIOs with 3 extra opendrain PIOs available when LED not used
  • PCM I²S output
  • 3 LED drivers (includes RGB) with PWM flasher independent of MCU

Audio Interfaces

  • ADC mono line input
  • 48 kHz ADC sample rate
  • Mono audio DAC
  • Supported DAC sample rates of 44.1 and 48 kHz

Package Option

  • 68-lead QFN 8 x 8 x 0.9mm 0.4mm pitch

Audio Features

  • Subwoofer EQ manageable via two configurations:
    • Subwoofer speaker EQ configurable via single bank three-stage parametric filter (wired and wireless channels)
    • User programmable EQ (wired input only)
  • Direct subwoofer volume control (wired input only)
  • Subwoofer volume controlled by source device when using wireless channel

Bluetooth® Profiles

  • Bluetooth v4.0 specification support


Terms of Supply

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